<template>
    <div class="upload-file">
      <el-card class="box-card">
          <div slot="header" class="clearfix">
            <span style="font-weight: bold;color: #0099ff;font-size: 16px;">产品底表</span>
          </div> 
                <table>
                    <tr>
                      <td>
                <el-upload
                  multiple
                  :action="uploadFileUrl"
                  :before-upload="handleBeforeUpload"
                  :file-list="fileList"
                  :limit="limit"
                  :on-error="handleUploadError"
                  :on-exceed="handleExceed"
                  :on-success="handleUploadSuccess"
                  :show-file-list="false"
                  :headers="headers"
                  class="upload-file-uploader"
                  ref="fileUpload"
                  v-if="!disabled"
                >
                  <!-- 上传按钮 -->
                  <el-button size="middle" type="success" icon="el-icon-plus" :disabled="btnflag" plain>上传数据</el-button>
                </el-upload>
              </td>
              <td><el-button size="middle" type="primary" plain @click="confirmUpload" :disabled="btnflag" style="margin-top: -3px;" icon="el-icon-s-promotion">确定导入</el-button></td>
            </tr>
          </table>
  
          <!-- 文件列表 -->
          <transition-group class="upload-file-list el-upload-list el-upload-list--text" name="el-fade-in-linear" tag="ul">
            <li :key="file.url" class="el-upload-list__item ele-upload-list__item-content" v-for="(file, index) in fileList">
              <el-link :href="`${baseUrl}${file.url}`" :underline="false" target="_blank">
                <span class="el-icon-document"> {{ file.name }} </span>
              </el-link>
              <div class="ele-upload-list__item-content-action">
                <el-link :underline="false" @click="handleDelete(index)" type="danger" v-if="!disabled">删除</el-link>
              </div>
            </li>
          </transition-group>
      </el-card>
  
      <el-card class="box-card" style="margin-top: 10px;" v-if="resInfo!=false">
        <div slot="header" class="clearfix">
          <span style="font-weight: bold;color: #0099ff;font-size: 16px;">导入结果</span>
        </div> 
        <span style="color:blue;">上传的数据文件：</span><span style="color:red;font-weight: bold;">{{ datafile[0].name }}</span>
        <el-divider></el-divider>
        <el-table :data="resList" border>
          <el-table-column label="序号" align="center" type="index" width="55" />
          <el-table-column label="yongyou_code" align="center" prop="yongyouCode" />
          <el-table-column label="yongyou_name" width="300"  prop="yongyouName" />
          <el-table-column label="zz_code" align="center" prop="zzCode" />
          <el-table-column label="cg_name_cn" width="160" align="center" prop="cgNameCn" />
          <el-table-column label="mem_code" align="center" prop="memCode" />
          <el-table-column label="type1" align="center" prop="type1" />
          <el-table-column label="type2" align="center" prop="type2" />
          <el-table-column label="type3" align="center" prop="type3" />
          <el-table-column label="spec" align="center" prop="spec" />
          <el-table-column label="cp_en_name" align="center" width="220" prop="cpEnName" />
          <el-table-column label="sup_en_name" align="center" prop="supEnName" />
          <el-table-column label="sup_cn_name" align="center" prop="supCnName" />
        </el-table>
      </el-card>
    </div>
  </template>
  
  <script>
  import { getToken } from "@/utils/auth";
  import { importWlda } from "@/api/system/cg/cgimport";
  
  export default {
    name: "Importwlda",
    props: {
        // 值
        value: [String, Object, Array],
        // 数量限制
        limit: {
            type: Number,
            default: 1
        },
        // 大小限制(MB)
        fileSize: {
            type: Number,
            default: 100
        },
        // 文件类型, 例如['png', 'jpg', 'jpeg']
        fileType: {
            type: Array,
            default: () => ["xls", "xlsx"]
        },
        // 是否显示提示
        isShowTip: {
            type: Boolean,
            default: true
        },
        // 禁用组件（仅查看文件）
        disabled: {
            type: Boolean,
            default: false
        }
    },
    data() {
      return {
        btnflag:false,
        resInfo: false,
        number: 0,
        uploadList: [],
        baseUrl: process.env.VUE_APP_BASE_API,
        uploadFileUrl: process.env.VUE_APP_BASE_API + "/common/upload", // 上传文件服务器地址
        headers: {
          Authorization: "Bearer " + getToken(),
        },
        fileList: [],
        datafile: [],
        paramData:[],
        resList: [],
      };
    },
    watch: {
      value: {
        handler(val) {
          if (val) {
            let temp = 1;
            // 首先将值转为数组
            const list = Array.isArray(val) ? val : this.value.split(',');
            // 然后将数组转为对象数组
            this.fileList = list.map(item => {
              if (typeof item === "string") {
                item = { name: item, url: item };
              }
              item.uid = item.uid || new Date().getTime() + temp++;
              return item;
            });
          } else {
            this.fileList = [];
            return [];
          }
        },
        deep: true,
        immediate: true
      }
    },
    computed: {
      // 是否显示提示
      showTip() {
        return this.isShowTip && (this.fileType || this.fileSize);
      },
    },
    methods: {
      confirmUpload(){
        this.btnflag = true;
        this.resList = [];
        importWlda(this.paramData[0]).then(res =>{
            if(res.code===200){
                this.datafile = this.fileList;
                this.resInfo = true;
                this.fileList = [];
                this.resList = res.data;
                this.btnflag = false;
            }else{
                this.resInfo = false;
                this.$modal.msgError(res.msg);
            }
        })
      },
      // 上传前校检格式和大小
      handleBeforeUpload(file) {
        // 校检文件类型
        if (this.fileType) {
          const fileName = file.name.split('.');
          const fileExt = fileName[fileName.length - 1];
          const isTypeOk = this.fileType.indexOf(fileExt) >= 0;
          if (!isTypeOk) {
            this.$modal.msgError(`文件格式不正确，请上传${this.fileType.join("/")}格式文件!`);
            return false;
          }
        }
        // 校检文件名是否包含特殊字符
        if (file.name.includes(',')) {
          this.$modal.msgError('文件名不正确，不能包含英文逗号!');
          return false;
        }
        // 校检文件大小
        if (this.fileSize) {
          const isLt = file.size / 1024 / 1024 < this.fileSize;
          if (!isLt) {
            this.$modal.msgError(`上传文件大小不能超过 ${this.fileSize} MB!`);
            return false;
          }
        }
        this.$modal.loading("正在上传文件，请稍候...");
        this.number++;
        return true;
      },
      // 文件个数超出
      handleExceed() {
        this.$modal.msgError(`上传文件数量不能超过 ${this.limit} 个!`);
      },
      // 上传失败
      handleUploadError(err) {
        this.$modal.msgError("上传文件失败，请重试");
        this.$modal.closeLoading();
      },
      // 上传成功回调
      handleUploadSuccess(res, file) {
        this.resInfo = false;
        this.datafile = [];
        this.paramData = [];
        if (res.code === 200) {
          this.uploadList.push({ name: res.originalFilename, url: res.fileName,nname:res.newFileName});
          this.uploadedSuccessfully();
        } else {
          this.number--;
          this.$modal.closeLoading();
          this.$modal.msgError(res.msg);
          this.$refs.fileUpload.handleRemove(file);
          this.uploadedSuccessfully();
        }
      },
      // 删除文件
      handleDelete(index) {
        this.fileList.splice(index, 1);
        this.$emit("input", this.listToString(this.fileList));
      },
      // 上传结束处理
      uploadedSuccessfully() {
        if (this.number > 0 && this.uploadList.length === this.number) {
          this.fileList = this.fileList.concat(this.uploadList);
          this.paramData = this.uploadList;
          this.uploadList = [];
          this.number = 0;
          this.$emit("input", this.listToString(this.fileList));
          this.$modal.closeLoading();
        }
      },
      // 获取文件名称
      getFileName(name) {
        // 如果是url那么取最后的名字 如果不是直接返回
        if (name.lastIndexOf("/") > -1) {
          return name.slice(name.lastIndexOf("/") + 1);
        } else {
          return name;
        }
      },
      // 对象转成指定字符串分隔
      listToString(list, separator) {
        let strs = "";
        separator = separator || ",";
        for (let i in list) {
          strs += list[i].url + separator;
        }
        return strs != '' ? strs.substr(0, strs.length - 1) : '';
      }
    }
  };
  </script>
  
  <style scoped lang="scss">
  .upload-file-uploader {
    margin-bottom: 5px;
  }
  .upload-file-list .el-upload-list__item {
    border: 1px solid #e4e7ed;
    line-height: 2;
    margin-bottom: 10px;
    position: relative;
  }
  .upload-file-list .ele-upload-list__item-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: inherit;
  }
  .ele-upload-list__item-content-action .el-link {
    margin-right: 10px;
  }
  </style>
  